OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 18 — Aug. 30, 2010
  • pp: 18886–18893

30 to 50 ns liquid-crystal optical switches

M. W. Geis, T. M. Lyszczarz, R. M. Osgood, and B. R. Kimball  »View Author Affiliations


Optics Express, Vol. 18, Issue 18, pp. 18886-18893 (2010)
http://dx.doi.org/10.1364/OE.18.018886


View Full Text Article

Enhanced HTML    Acrobat PDF (1203 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

The optical switching time of twisted-nematic liquid-crystal cells using the liquid crystals, 5CB (C5H11-Ph-Ph-CN), 5OCB(C5H11-O-Ph-Ph-CN) and PCH5 (C5H11-Cy-Ph-CN) have been characterized as a function of temperature, bias voltage and switching voltage, V. The transition time from 90% to 10% transmission scales as V-1.9 and is limited to 30 to 50 ns by the liquid-crystal breakdown electric field, ~100 V μm−1. The time from the initial switching voltage step to 90% transmission, delay time, decreases with increasing bias and switching voltage. For 5CB and 5OCB the delay time approaches a constant value at higher electric fields, >10 V μm−1. Both the transition and delay times decrease with increasing temperature. The minimum transition time at temperatures a few degrees below the nematic-isotropic temperature are 32, 32, and 44 ns and delay times are 44, 25 and 8 ns for 5CB, 5OCB, and PCH5 respectively.

© 2010 OSA

OCIS Codes
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Optical Devices

History
Original Manuscript: June 25, 2010
Revised Manuscript: August 2, 2010
Manuscript Accepted: August 7, 2010
Published: August 19, 2010

Citation
M. W. Geis, T. M. Lyszczarz, R. M. Osgood, and B. R. Kimball, "30 to 50 ns liquid-crystal optical switches," Opt. Express 18, 18886-18893 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-18-18886


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. http://www.cordin.com/index.html
  2. R. K. Reich, D. D. Rathman, D. M. O'Mara, D. J. Young, A. H. Loomis, R. M. Osgood, R. A. Murphy, M. Rose, R. Berger, B. M. Tyrrell, S. A. Watson, M. D. Ulibarri, T. Perry, F. Weber, and H. Robey, “Lincoln Laboratory high-speed solid-state imager technology,” Proc. SPIE 6279, 62791K (2007). [CrossRef]
  3. M. W. Geis, R. J. Molnar, G. W. Turner, T. M. Lyszczarz, R. M. Osgood, and B. R. Kimball, “30 to 50 ns liquid-crystal optical switches,” Proc. SPIE 7618, 76180J (2010). [CrossRef]
  4. H. Takanashi, J. E. Maclennan, and N. A. Clark, “Sub 100 Nanosecond Pretilted Planar-to-Homeotropic Reorientation of Nematic Liquid Crystals under High Electric Field,” J. Appl. Phys. 37(5), 2587–2589 (1998). [CrossRef]
  5. H.-Y. Wu, C.-Y. Wang, C.-J. Lin, R.-P. Pan, S.-S. Lin, C.-D. Lee, and C.-S. Kou, “Mechanism in determining pretilt angle of liquid crystals aligned on fluorinated copolymer films,” J. Phys. D Appl. Phys. 42(15), 155303 (2009). [CrossRef]
  6. M. Lu, K. H. Yang, T. Nakasogi, and S. J. Chey, “Homeotropic Alignment by Single Oblique Evaporation of SiO2 and Its Application to High Resolution Microdisplays,” SID Int. Symp. Digest Tech. Papers 31(1), 446–449 (2000). [CrossRef]
  7. S. Lamarque-Forget, P. Martinot-Lagarde, and I. Dozov, “Technique for Local Pretilt Measurement in Nematic Liquid Crystals,” Jpn. J. Appl. Phys. 40(Part 2, No. 4A), L349–L351 (2001). [CrossRef]
  8. I.-K. Huh and Y.-B. Kim, “Electro-optical Properties of Liquid Crystal Mixtures Containing Fluoroisothiocyanated Compounds,” Jpn. J. Appl. Phys. 41(Pt.1, No. 11 A), 6484–6485 (2002). [CrossRef]
  9. M. D. Simões, S. M. Simeão, A. de Campos, and A. J. Palangana, “Corresponding states of nematic birefringence: an order parameter universality,” Philos. Mag. 87(33), 5237–5247 (2007). [CrossRef]
  10. M. D. Simões, S. M. Simeão, S. M. Domiciano, and A. de Campos, “Nematic universality,” Phys. Lett. A 372(32), 5346–5351 (2008). [CrossRef]
  11. F.-J. Bock, H. Kneppe, and F. Schneider, “Rotational viscosity of nematic liquid crystals and their shear viscosity under flow alignment,” Liq. Cryst. 1(3), 239–251 (1986). [CrossRef]
  12. S. Urban, B. Gestblom, W. Kuczyński, S. Pawlus, and A. Würflinger, “Nematic order parameter as determined from dielectric relaxation data and other methods,” Phys. Chem. Chem. Phys. 5(5), 924–928 (2003). [CrossRef]
  13. B. A. Belyaev, N. A. Drokin, V. F. Shabanov, and V. A. Baranova, “Dielectric Properties of Liquid Crystals of the Cyano Derivative Compounds with Different Fragments in the Molecular Core,” Phys. Solid State 46(3), 574–578 (2004). [CrossRef]
  14. M. Gu, Y. Yin, S. V. Shiyanovskii, and O. D. Lavrentovich, “Effects of dielectric relaxation on the director dynamics of uniaxial nematic liquid crystals,” Phys. Rev. E Stat. Nonlin. Soft Matter Phys. 76(6 Pt 1), 061702 (2007). [CrossRef]
  15. Neal Clark, Liquid Crystal Group, Department of Physics, University of Colorado, Boulder, CO 80309–0390 (personal communication, 2009).
  16. N. A. Clark and S. T. Lagerwall, “Submicrosecond bistable electro-optic switching in liquid crystals,” Appl. Phys. Lett. 36(11), 899–901 (1980). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited